At Hot Chips 2018 Intel discussed its upcoming Cascade Lake architecture. During its short presentation, Intel went over hardware improvements made on Cascade Lake that will mitigate Spectre, Meltdown, and other exploits. In addition to mitigations, the company gave details on other architectural improvements.
https://www.notebookcheck.net/Intel-reveals-details-on-its-newest-Cascade-Lake-architecture.323894.0.html